CN107699787A - A kind of spheroidal graphite cast-iron of low-temperature-resistance high-toughness and preparation method thereof - Google Patents
A kind of spheroidal graphite cast-iron of low-temperature-resistance high-toughness and preparation method thereof Download PDFInfo
- Publication number
- CN107699787A CN107699787A CN201711052442.0A CN201711052442A CN107699787A CN 107699787 A CN107699787 A CN 107699787A CN 201711052442 A CN201711052442 A CN 201711052442A CN 107699787 A CN107699787 A CN 107699787A
- Authority
- CN
- China
- Prior art keywords
- iron
- molten iron
- casting
- apperance
- running channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910001141 Ductile iron Inorganic materials 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 30
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 223
- 229910052742 iron Inorganic materials 0.000 claims description 107
- 238000005266 casting Methods 0.000 claims description 88
- NCJRLCWABWKAGX-UHFFFAOYSA-N [Si].[Ca].[Ba] Chemical compound [Si].[Ca].[Ba] NCJRLCWABWKAGX-UHFFFAOYSA-N 0.000 claims description 30
- 239000012535 impurity Substances 0.000 claims description 27
- 239000004033 plastic Substances 0.000 claims description 26
- 229920003023 plastic Polymers 0.000 claims description 26
- 239000002054 inoculum Substances 0.000 claims description 24
- 239000011777 magnesium Substances 0.000 claims description 22
- 229910052788 barium Inorganic materials 0.000 claims description 18
- 229910052791 calcium Inorganic materials 0.000 claims description 18
- 239000011575 calcium Substances 0.000 claims description 18
- 238000011081 inoculation Methods 0.000 claims description 17
- 229910052749 magnesium Inorganic materials 0.000 claims description 17
- 229910001093 Zr alloy Inorganic materials 0.000 claims description 15
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 15
- 150000002910 rare earth metals Chemical class 0.000 claims description 15
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 14
- 238000010114 lost-foam casting Methods 0.000 claims description 14
- 229910052702 rhenium Inorganic materials 0.000 claims description 13
- 229910052710 silicon Inorganic materials 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims description 9
- 229910052797 bismuth Inorganic materials 0.000 claims description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims description 8
- 229910052717 sulfur Inorganic materials 0.000 claims description 8
- 229910052720 vanadium Inorganic materials 0.000 claims description 8
- 229910052726 zirconium Inorganic materials 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 7
- 241001062472 Stokellia anisodon Species 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 5
- 238000003618 dip coating Methods 0.000 claims description 5
- 238000005187 foaming Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 6
- 230000003014 reinforcing effect Effects 0.000 abstract description 6
- 238000005728 strengthening Methods 0.000 abstract 1
- 210000000038 chest Anatomy 0.000 description 21
- 239000007789 gas Substances 0.000 description 20
- 229910001018 Cast iron Inorganic materials 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910002804 graphite Inorganic materials 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910001060 Gray iron Inorganic materials 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 230000001934 delay Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000002309 gasification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910001037 White iron Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009491 slugging Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/10—Making spheroidal graphite cast-iron
- C21C1/105—Nodularising additive agents
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
- C22C33/10—Making cast-iron alloys including procedures for adding magnesium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/04—Cast-iron alloys containing spheroidal graphite
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention provides a kind of spheroidal graphite cast-iron of low-temperature-resistance high-toughness, composition reinforcing has been carried out to ductile cast iron material, present invention also offers a kind of preparation method of the spheroidal graphite cast-iron of low-temperature-resistance high-toughness, process strengthening has been carried out to ductile cast iron material, composition strengthens combined process reinforcing and realizes combination among the strong ones, so that tensile strength >=450MPa of the ductile cast iron material, yield strength >=290MPa, elongation percentage δ >=24%, 40 DEG C of Impact energy Ak v >=15J, so that the ductile cast iron material can under 60 DEG C to 40 DEG C cryogenic conditions normal use, engineering construction to extremely frigid zones is had important practical significance with economic development and application value.
Description
Technical field
The present invention relates to ductile cast iron material technical field, a kind of spheroidal graphite cast-iron more particularly, to low-temperature-resistance high-toughness and
Its preparation method.
Background technology
Spheroidal graphite cast-iron is a kind of 20th century high-strength cast iron material for growing up of the fifties, its combination property close to
Steel, its excellent performance is based on, has been successfully used to cast some stress complexity, intensity, toughness, wearability require higher
Part.Spheroidal graphite cast-iron developed rapidly for be only second to gray cast iron, using quite varied cast iron materials.It is so-called " with iron generation
Steel ", refer mainly to spheroidal graphite cast-iron.
Spheroidal graphite cast-iron is to obtain globular graphite by spheroidising and inoculation, is effectively improved the mechanicalness of cast iron
Can, plasticity and toughness are in particular improved, so as to obtain the intensity also higher than carbon steel.
Cast iron is the iron-carbon alloy that phosphorus content is more than 2.11%, is passed through by the steels such as commercial iron, steel scrap and its alloy material
To cross high-temperature fusion and casting and obtain, the carbon in cast iron is separated out with graphite form, if when the graphite separated out is in strip of sheet
Cast iron is grey cast-iron or gray cast iron, in cast iron during vermiform vermicular cast iron, in cast iron when rolling into a ball cotton-shaped white cast-iron
Or code iron and in it is spherical when cast iron be just spheroidal graphite cast-iron.
At present, the comprehensive mechanical property of existing spheroidal graphite cast-iron is not ideal, and especially low-temperature impact toughness is relatively low, in low temperature
Under the conditions of be prone to brittle fracture, the technical property requirements of low temperature environment, and the casting work of spheroidal graphite cast-iron can not be met
Skill also have impact on the mechanical property of ductile cast iron casting.There is an urgent need to using resistance to for the large scale equipment to work at low ambient temperatures at present
The parts of Low-temperature high-tenacity nodular cast iron material, ensure that its is reliable and safe to use with this.
Therefore, how to provide it is a kind of can under -60 DEG C to -40 DEG C cryogenic conditions normal use ductile cast iron material,
Engineering construction and economic development beneficial to extremely frigid zones are the technical problems of current those skilled in the art's urgent need to resolve.
The content of the invention
It is an object of the invention to provide a kind of spheroidal graphite cast-iron of low-temperature-resistance high-toughness, the ductile cast iron material can be -60
DEG C to normal use under -40 DEG C of cryogenic conditions, the engineering construction to extremely frigid zones has important practical significance with economic development
And application value.Another mesh of the present invention is to provide a kind of preparation method of the spheroidal graphite cast-iron of low-temperature-resistance high-toughness.
To solve above-mentioned technical problem, technical scheme provided by the invention is：
A kind of spheroidal graphite cast-iron of low-temperature-resistance high-toughness, include the component of following percetage by weight：3.8%~4.0% C,
1.5%~2.5% Si, 0.015%~0.025% Ti, 0.002%~0.004% Mo, 0.002%~0.004%
V, S ＜ 0.015%, P ＜ 0.03%, 0.03%~0.05% Mg, 0.02%~0.03% Re, 0.0015%~
0.0100% Ca, 0.0015%~0.0100% Ba, 0.0008%~0.0020% Bi, 0.0025%~0.0045%
Zr, surplus is Fe and inevitable impurity.
A kind of preparation method of the spheroidal graphite cast-iron of above-mentioned low-temperature-resistance high-toughness, comprises the following steps：
1) casting form of target casting is produced using foamed plastics according to lost-foam casting method：Producing casting form
During mix powdered post inoculant so that the casting mould of the foamed plastics material of the solid-state obtained after foaming
Contain equally distributed post inoculant powder in sample；
The running channel apperance of running channel is produced using foamed plastics；
Then the running channel apperance is bonded on the bottom surface of the casting form, and control the running channel apperance with it is described
The axial direction of casting form is parallel to each other, and obtains the apperance integral piece for including the casting form and running channel apperance；
Then then dried in the outer surface coating refractory coating of apperance integral piece using dip coating manner；
Open top container is taken, apperance integral piece is positioned in a manner of vertical in the upper open top container；
Then upper stalk is set, the upper stalk is passed through and is fixed in the lower bottom of the upper open top container, described
The lower end of running channel apperance is contacted with the upper end open of the upper stalk, and the lower surface of the running channel apperance is completely covered by
The upper end open of the upper stalk, seal the upper stalk and the junction of bottom under the upper open top container；
Then vaccum suction tube is set, the vaccum suction tube is passed through and is fixed on the side box wall of the upper open top container,
The vaccum suction tube it is inner spaced apart with the apperance integral piece, the outer end of the vaccum suction tube is exposed at described
The outside of upper open top container and connected with vavuum pump, seal the junction of the vaccum suction tube and the upper open top container side box wall；
Then drystone sand is filled out into the upper open top container according to lost-foam casting method, then vibration molding；
Then plastic covering film is sealed on the upper surface of the casting mold according to lost-foam casting method in upper open top container；
2) smelt：Smelting molten iron, when molten iron temperature reaches 1490 DEG C~1530 DEG C, stokehold adjustment hot metal composition causes iron
Water includes the component of following percetage by weight：3.8%~4.0% C, 1.5%~2.5% Si, 0.015%~0.025%
Ti, 0.002%~0.004% Mo, 0.002%~0.004% V, S ＜ 0.015%, P ＜ 0.03%, surplus be Fe with
And inevitable impurity；
After hot metal composition is qualified, skim；
Then, 3min~5min is incubated, molten iron is ready for and comes out of the stove；
Then spheroidising is carried out：Light rare earth magnesium nodulizer is placed in casting ladle bottom, covers long-acting silicon barium calcium thereon
Inovulant, method spheroidizing process is poured using lid bag dam-type molten iron spheroidising is carried out to molten iron；
Then an inoculation is carried out：Long-acting silicon barium calcium zircaloy inovulant is added into the molten iron after spheroidising,
Carry out an inoculation；
Then the molten iron obtained after an inoculation is contained with open-top receptacle；
3) open-top receptacle in step 2) is placed in a second closed chest, and causes the upper stalk
Lower end is immersed in the molten iron in the open-top receptacle through the top case lid of second chest, seal the upper stalk with it is described
The junction of second chest；
4) compressed gas are blowed into second chest by air inlet pipe, while opens vavuum pump and extract vacuum, it is open
Molten iron in container is up along upper stalk in the presence of the pressure of compressed gas and the suction force of vacuum, molten iron priority handle
Running channel apperance gasifies with casting form, and running channel apperance is with the gas after casting form gasification by vaccum suction tube by vacuum pumping
Walk, molten iron fills type from the bottom up, until the liquid level in open-top receptacle, which no longer declines, shows that molten iron fills whole casting mold die cavity, then
Holding blows gas and vacuumizes certain time；
5) after design time is reached, stopping blows compressed gas and vacuumized；
The upper stalk is extracted out from second chest after Shake-out Time is reached, then takes the upper opening apart
Case, casting mold is then abolished, obtain ductile cast iron casting.
Preferably, in step 2), the light rare earth magnesium nodulizer includes the component of following percetage by weight：Mg：3%
~4%, Re：2%~2.5%, Si：25%~35%, surplus is iron and inevitable impurity；Light rare earth magnesium alloy nodularization
The addition of agent is the 1.0%~1.2% of molten iron gross mass, and spheroidization treatment temperature is 1490 DEG C~1520 DEG C；
And in step 2), long-acting silicon barium calcium inovulant includes the component of following percetage by weight：Si：40%~50%, Ba：
0.5%~0.7%, Ca：0.6%~1.0%, remaining is iron and inevitable impurity；Long-acting silicon barium calcium inovulant adds
Enter 0.3%~0.4% that amount is molten iron gross mass.
Preferably, in step 2), the long-acting silicon barium calcium zircaloy inovulant includes the component of following percetage by weight：
Si：40%~50%, Ba：0.5%~0.7%, Ca：0.6%~1.0%, Zr：0.5%~0.8%, remaining is for iron and not
Evitable impurity；The addition of long-acting silicon barium calcium zircaloy inovulant is the 0.5%~0.6% of molten iron gross mass.
Preferably, in step 1), post inoculant includes the component of following percetage by weight：Si：40%~50%, Ba：
0.5%~0.7%, Ca：0.6%~1.0%, Bi：0.8%~1.0%, Re：0.1%~0.3%, remaining is iron and can not
The impurity avoided；The addition of post inoculant is the 0.1%~0.15% of molten iron gross mass.
The invention provides a kind of spheroidal graphite cast-iron of low-temperature-resistance high-toughness, and composition reinforcing has been carried out to ductile cast iron material,
Present invention also offers a kind of preparation method of the spheroidal graphite cast-iron of low-temperature-resistance high-toughness, and it is strong to have carried out technique to ductile cast iron material
Change, composition strengthens combined process reinforcing and realizes combination among the strong ones so that tensile strength >=450MPa of the ductile cast iron material, surrender
Intensity >=290MPa, elongation percentage δ >=24%, -40 DEG C of Impact energy Ak v >=15J so that the ductile cast iron material can -
Normal use under 60 DEG C to -40 DEG C cryogenic conditions, the engineering construction to extremely frigid zones have important reality meaning with economic development
Justice and application value.
Brief description of the drawings
Fig. 1 is that a kind of structure of the casting system of the spheroidal graphite cast-iron for low-temperature-resistance high-toughness that embodiments of the invention provide is shown
It is intended to；
Fig. 2 is the structural representation of the reel apperance in Fig. 1.
In figure：1 casting form, 2 running channel apperances, 3 drystone sands, open top container on 4,5 plastic sheetings, stalk on 6,7 is true
Empty suction tube, 8 second chests, 9 open-top receptacles, 10 air inlet pipe.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained on the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is to be understood that term " " center ", " axial direction ", " radial direction ", " longitudinal direction ", " transverse direction ",
" length ", " width ", " on ", " under ", "front", "rear", "left", "right", " top ", " bottom ", " interior ", " outer ", " clockwise ", " inverse
The orientation or position relationship of the instructions such as hour hands " are based on orientation shown in the drawings or position relationship, are for only for ease of description originally
Invent and simplify description, rather than the device or element of instruction or hint meaning there must be specific orientation, with specific side
Position construction and operation, therefore be not considered as limiting the invention.
Reference picture 1, Fig. 1 are a kind of casting system of the spheroidal graphite cast-iron for low-temperature-resistance high-toughness that embodiments of the invention provide
Structural representation；Fig. 2 is the structural representation of the reel apperance in Fig. 1.
This application provides a kind of spheroidal graphite cast-iron of low-temperature-resistance high-toughness, include the component of following percetage by weight：3.8%
~4.0% C, 1.5%~2.5% Si, 0.015%~0.025% Ti, 0.002%~0.004% Mo, 0.002%
~0.004% V, S ＜ 0.015%, P ＜ 0.03%, 0.03%~0.05% Mg, 0.02%~0.03% Re,
0.0015%~0.0100% Ca, 0.0015%~0.0100% Ba, 0.0008%~0.0020% Bi, 0.0025%
~0.0045% Zr, surplus are Fe and inevitable impurity.
Present invention also provides a kind of preparation method of the spheroidal graphite cast-iron of above-mentioned low-temperature-resistance high-toughness, including following step
Suddenly：
1) casting form 1 of target casting is produced using foamed plastics according to lost-foam casting method：Producing casting mould
Powdered post inoculant is mixed during sample 1 so that the casting of the foamed plastics material of the solid-state obtained after foaming
Contain equally distributed post inoculant powder in apperance 1；
Such as：Using spheroidal graphite cast-iron reel as target casting, Fig. 1 medium castings apperance 1 is the foam plastic of spheroidal graphite cast-iron reel
Expect the reel apperance of material；
The running channel apperance 2 of running channel is produced using foamed plastics；
Then the running channel apperance 2 is bonded on the bottom surface of the casting form 1, and control the running channel apperance 2 with
The axial direction of the casting form 1 is parallel to each other, and obtains the apperance one for including the casting form 1 and running channel apperance 2
Part；
Then then dried in the outer surface coating refractory coating of apperance integral piece using dip coating manner；
Open top container 4 is taken, apperance integral piece is positioned in a manner of vertical in the upper open top container 4；
Then upper stalk 6 is set, the upper stalk 6 is passed through and is fixed in the lower bottom of the upper open top container 4, institute
The lower end for stating running channel apperance 2 contacts with the upper end open of the upper stalk 6, and the lower surface of the running channel apperance 2 is complete
The upper end open of upper stalk 6, seals the upper stalk 6 and the junction of described upper 4 times bottoms of open top container described in complete hiding；
Then vaccum suction tube 7 is set, the vaccum suction tube 7 passes through and is fixed on the side box wall of the upper open top container 4
On, inner spaced apart with the apperance integral piece, the outer end dew of the vaccum suction tube 7 of the vaccum suction tube 7
The outside of open top container 4 and connected on described with vavuum pump, seal the vaccum suction tube 7 and the upper side box wall of open top container 4
Junction；
Then drystone sand 3 is filled out into the upper open top container 4 according to lost-foam casting method, then vibration molding；
Then plastic covering film 5 is sealed on the upper surface of the casting mold according to lost-foam casting method in upper open top container 4；
2) smelt：Smelting molten iron, when molten iron temperature reaches 1490 DEG C~1530 DEG C, stokehold adjustment hot metal composition causes iron
Water includes the component of following percetage by weight：3.8%~4.0% C, 1.5%~2.5% Si, 0.015%~0.025%
Ti, 0.002%~0.004% Mo, 0.002%~0.004% V, S ＜ 0.015%, P ＜ 0.03%, surplus be Fe with
And inevitable impurity；
After hot metal composition is qualified, skim；
Then, 3min~5min is incubated, molten iron is ready for and comes out of the stove；
Then spheroidising is carried out：Light rare earth magnesium nodulizer is placed in casting ladle bottom, covers long-acting silicon barium calcium thereon
Inovulant, method spheroidizing process is poured using lid bag dam-type molten iron spheroidising is carried out to molten iron；
Then an inoculation is carried out：Long-acting silicon barium calcium zircaloy inovulant is added into the molten iron after spheroidising,
An inoculation is carried out, to eliminate the chilling tendency caused by tension-active element, graphite nodule is refined, delays decaying spheroidisation；
Then the molten iron open-top receptacle 9 obtained after an inoculation is contained；
3) open-top receptacle 9 in step 2) is placed in a second closed chest 8, and causes the upper stalk
6 lower end is immersed in the molten iron in the open-top receptacle 9 through the top case lid of second chest 8, seals the upper stalk 6
With the junction of second chest 8；
4) compressed gas are blowed into second chest 8 by air inlet pipe 10, while opens vavuum pump and extract vacuum, opened
Molten iron in mouth container 9 is up along upper stalk 6 in the presence of the pressure of compressed gas and the suction force of vacuum, and molten iron is first
Running channel apperance 2 and casting form 1 are gasified afterwards, the gas after running channel apperance 2 gasifies with casting form 1 passes through vaccum suction tube 7
Taken away by vavuum pump, molten iron fills type from the bottom up, until the liquid level in open-top receptacle 9, which no longer declines, shows that molten iron fills whole casting
Type die cavity, then keep blowing gas and vacuumize certain time；
5) after design time is reached, stopping blows compressed gas and vacuumized；
The upper stalk 6 is extracted out from second chest 8 after Shake-out Time is reached, then taken apart described spacious
Mouth case 4, then abolishes casting mold, obtains ductile cast iron casting.
In one embodiment of the application, in step 2), the light rare earth magnesium nodulizer includes following weight hundred
The component of fraction：Mg：3%~4%, Re：2%~2.5%, Si：25%~35%, surplus be iron and inevitably it is miscellaneous
Matter；The addition of light rare earth magnesium nodulizer is the 1.0%~1.2% of molten iron gross mass, and spheroidization treatment temperature is 1490 DEG C
~1520 DEG C；
And in step 2), long-acting silicon barium calcium inovulant includes the component of following percetage by weight：Si：40%~50%, Ba：
0.5%~0.7%, Ca：0.6%~1.0%, remaining is iron and inevitable impurity；Long-acting silicon barium calcium inovulant adds
Enter 0.3%~0.4% that amount is molten iron gross mass.
In one embodiment of the application, in step 2), the long-acting silicon barium calcium zircaloy inovulant includes following heavy
Measure the component of percentage：Si：40%~50%, Ba：0.5%~0.7%, Ca：0.6%~1.0%, Zr：0.5%~0.8%,
Remaining is iron and inevitable impurity；The addition of long-acting silicon barium calcium zircaloy inovulant is the 0.5% of molten iron gross mass
~0.6%.
In one embodiment of the application, in step 1), post inoculant includes the component of following percetage by weight：
Si：40%~50%, Ba：0.5%~0.7%, Ca：0.6%~1.0%, Bi：0.8%~1.0%, Re：0.1%~
0.3%, remaining is iron and inevitable impurity；The addition of post inoculant for molten iron gross mass 0.1%~
0.15%.
The invention provides a kind of spheroidal graphite cast-iron of low-temperature-resistance high-toughness, and composition reinforcing has been carried out to ductile cast iron material,
Present invention also offers a kind of preparation method of the spheroidal graphite cast-iron of low-temperature-resistance high-toughness, and it is strong to have carried out technique to ductile cast iron material
Change, composition strengthens combined process reinforcing and realizes combination among the strong ones so that tensile strength >=450MPa of the ductile cast iron material, surrender
Intensity >=290MPa, elongation percentage δ >=24%, -40 DEG C of Impact energy Ak v >=15J so that the ductile cast iron material can -
Normal use under 60 DEG C to -40 DEG C cryogenic conditions, the engineering construction to extremely frigid zones have important reality meaning with economic development
Justice and application value.
In a kind of preparation method of the spheroidal graphite cast-iron for low-temperature-resistance high-toughness that the application provides, the application will smelt spheroidal graphite
Post inoculant powder needed for cast iron is mixed in the casting form 1 of the foamed plastics material of target casting in advance, i.e., will be secondary pregnant
Educate agent powder to be mixed in foamed plastics in advance, the curing molding temperature of foamed plastics is not high, and typically below 200 DEG C, the temperature is not
High temperature scaling loss and high-temperature oxydation can be caused to mixing each element in post inoculant therein, and by foamed plastics material
In the drystone sand 3 that casting form 1 is embedded in lost-foam casting method and casting is vacuumized, so so that entirely pouring
During casting, in post inoculant each element all without with contacting external air, will not be lost by high-temperature oxydation, will not output oxygen
Slugging, so as to improve the utilization rate of post inoculant, late inoculation effect is improved, improves the comprehensive of spheroidal graphite cast-iron
Energy.
For a further understanding of the present invention, with reference to embodiment to a kind of ball of low-temperature-resistance high-toughness provided by the invention
Black cast iron and preparation method thereof is described in detail, and protection scope of the present invention is not limited by the following examples.
Embodiment 1
A kind of preparation method of the spheroidal graphite cast-iron of low-temperature-resistance high-toughness, comprises the following steps：
1) casting form 1 of target casting is produced using foamed plastics according to lost-foam casting method：Producing casting mould
Powdered post inoculant is mixed during sample 1 so that the casting of the foamed plastics material of the solid-state obtained after foaming
Contain equally distributed post inoculant powder in apperance 1；
In step 1), the post inoculant includes the component of following percetage by weight：Si：40%, Ba：0.7%, Ca：
0.6%, Bi：1.0%, Re：0.1%, remaining is iron and inevitable impurity；The addition of post inoculant is that molten iron is total
The 0.15% of quality；
The running channel apperance 2 of running channel is produced using foamed plastics；
Then the running channel apperance 2 is bonded on the bottom surface of the casting form 1, and control the running channel apperance 2 with
The axial direction of the casting form 1 is parallel to each other, and obtains the apperance one for including the casting form 1 and running channel apperance 2
Part；
Then then dried in the outer surface coating refractory coating of apperance integral piece using dip coating manner；
Open top container 4 is taken, apperance integral piece is positioned in a manner of vertical in the upper open top container 4；
Then upper stalk 6 is set, the upper stalk 6 is passed through and is fixed in the lower bottom of the upper open top container 4, institute
The lower end for stating running channel apperance 2 contacts with the upper end open of the upper stalk 6, and the lower surface of the running channel apperance 2 is complete
The upper end open of upper stalk 6, seals the upper stalk 6 and the junction of described upper 4 times bottoms of open top container described in complete hiding；
Then vaccum suction tube 7 is set, the vaccum suction tube 7 passes through and is fixed on the side box wall of the upper open top container 4
On, inner spaced apart with the apperance integral piece, the outer end dew of the vaccum suction tube 7 of the vaccum suction tube 7
The outside of open top container 4 and connected on described with vavuum pump, seal the vaccum suction tube 7 and the upper side box wall of open top container 4
Junction；
Then drystone sand 3 is filled out into the upper open top container 4 according to lost-foam casting method, then vibration molding；
Then plastic sheeting 5 is covered on the upper surface of the casting mold in upper open top container 4；
2) smelt：Smelting molten iron, when molten iron temperature reaches 1490 DEG C, stokehold adjustment hot metal composition cause molten iron include with
The component of lower percetage by weight：3.8% C, 1.5% Si, 0.025% Ti, 0.004% Mo, 0.002% V, S ＜
0.015%, P ＜ 0.03%, surplus are Fe and inevitable impurity；
After hot metal composition is qualified, skim；
Then, 5min is incubated, molten iron is ready for and comes out of the stove；
Then spheroidising is carried out：Light rare earth magnesium nodulizer is placed in casting ladle bottom, covers long-acting silicon barium calcium thereon
Inovulant, method spheroidizing process is poured using lid bag dam-type molten iron spheroidising is carried out to molten iron；
In step 2), the light rare earth magnesium nodulizer includes the component of following percetage by weight：Mg：3%, Re：
2.5%, Si：25%, surplus is iron and inevitable impurity；The addition of light rare earth magnesium nodulizer is the total matter of molten iron
The 1.2% of amount, spheroidization treatment temperature are 1490 DEG C；
And in step 2), long-acting silicon barium calcium inovulant includes the component of following percetage by weight：Si：40%, Ba：0.7%,
Ca：0.6%, remaining is iron and inevitable impurity；The addition of long-acting silicon barium calcium inovulant is molten iron gross mass
0.4%；
Then an inoculation is carried out：Long-acting silicon barium calcium zircaloy inovulant is added into the molten iron after spheroidising,
An inoculation is carried out, to eliminate the chilling tendency caused by tension-active element, graphite nodule is refined, delays decaying spheroidisation；
In step 2), the long-acting silicon barium calcium zircaloy inovulant includes the component of following percetage by weight：Si：40%,
Ba：0.7%, Ca：0.6%, Zr：0.8%, remaining is iron and inevitable impurity；Long-acting silicon barium calcium zircaloy inovulant
Addition be molten iron gross mass 0.5%；
Then the molten iron open-top receptacle 9 obtained after an inoculation is contained；
3) open-top receptacle 9 in step 2) is placed in a second closed chest 8, and causes the upper stalk
6 lower end is immersed in the molten iron in the open-top receptacle 9 through the top case lid of second chest 8, seals the upper stalk 6
With the junction of second chest 8；
4) compressed gas are blowed into second chest 8, while opens vavuum pump extraction vacuum, in open-top receptacle 9
Molten iron is up along upper stalk 6 in the presence of the pressure of compressed gas and the suction force of vacuum, and molten iron is successively running channel mould
Sample 2 gasifies with casting form 1, and running channel apperance 2 is with the gas after the gasification of casting form 1 by vaccum suction tube 7 by vacuum pumping
Walk, molten iron fills type from the bottom up, until the liquid level in open-top receptacle 9, which no longer declines, shows that molten iron fills whole casting mold die cavity, so
Keep blowing gas afterwards and vacuumize certain time；
5) after design time is reached, stopping blows compressed gas and vacuumized；
The upper stalk 6 is extracted out from second chest 8 after Shake-out Time is reached, then taken apart described spacious
Mouth case 4, then abolishes casting mold, obtains ductile cast iron casting.
Chemical examination is sampled to ductile cast iron casting, the results are shown in Table 1；
The detection standard sample of the ductile cast iron material is prepared as stated above, detects the mechanical property of the ductile cast iron material
Can, it the results are shown in Table 2.
Embodiment 2
A kind of preparation method of the spheroidal graphite cast-iron of low-temperature-resistance high-toughness, comprises the following steps：
1) casting form 1 of target casting is produced using foamed plastics according to lost-foam casting method：Producing casting mould
Powdered post inoculant is mixed during sample 1 so that the casting of the foamed plastics material of the solid-state obtained after foaming
Contain equally distributed post inoculant powder in apperance 1；
In step 1), the post inoculant includes the component of following percetage by weight：Si：40%, Ba：0.5%, Ca：
1.0%, Bi：0.8%, Re：0.3%, remaining is iron and inevitable impurity；The addition of post inoculant is that molten iron is total
The 0.1% of quality；
The running channel apperance 2 of running channel is produced using foamed plastics；
Then the running channel apperance 2 is bonded on the bottom surface of the casting form 1, and control the running channel apperance 2 with
The axial direction of the casting form 1 is parallel to each other, and obtains the apperance one for including the casting form 1 and running channel apperance 2
Part；
Then then dried in the outer surface coating refractory coating of apperance integral piece using dip coating manner；
Open top container 4 is taken, apperance integral piece is positioned in a manner of vertical in the upper open top container 4；
Then upper stalk 6 is set, the upper stalk 6 is passed through and is fixed in the lower bottom of the upper open top container 4, institute
The lower end for stating running channel apperance 2 contacts with the upper end open of the upper stalk 6, and the lower surface of the running channel apperance 2 is complete
The upper end open of upper stalk 6, seals the upper stalk 6 and the junction of described upper 4 times bottoms of open top container described in complete hiding；
Then vaccum suction tube 7 is set, the vaccum suction tube 7 passes through and is fixed on the side box wall of the upper open top container 4
On, inner spaced apart with the apperance integral piece, the outer end dew of the vaccum suction tube 7 of the vaccum suction tube 7
The outside of open top container 4 and connected on described with vavuum pump, seal the vaccum suction tube 7 and the upper side box wall of open top container 4
Junction；
Then drystone sand 3 is filled out into the upper open top container 4 according to lost-foam casting method, then vibration molding；
Then plastic sheeting 5 is covered on the upper surface of the casting mold in upper open top container 4；
2) smelt：Smelting molten iron, when molten iron temperature reaches 1530 DEG C, stokehold adjustment hot metal composition cause molten iron include with
The component of lower percetage by weight：4.0% C, 1.5% Si, 0.015% Ti, 0.002% Mo, 0.004% V, S ＜
0.015%, P ＜ 0.03%, surplus are Fe and inevitable impurity；
After hot metal composition is qualified, skim；
Then, 5min is incubated, molten iron is ready for and comes out of the stove；
Then spheroidising is carried out：Light rare earth magnesium nodulizer is placed in casting ladle bottom, covers long-acting silicon barium calcium thereon
Inovulant, method spheroidizing process is poured using lid bag dam-type molten iron spheroidising is carried out to molten iron；
In step 2), the light rare earth magnesium nodulizer includes the component of following percetage by weight：Mg：4%, Re：
2%, Si：25%, surplus is iron and inevitable impurity；The addition of light rare earth magnesium nodulizer is molten iron gross mass
1.0%, spheroidization treatment temperature be 1520 DEG C；
And in step 2), long-acting silicon barium calcium inovulant includes the component of following percetage by weight：Si：40%, Ba：0.5%,
Ca：1.0%, remaining is iron and inevitable impurity；The addition of long-acting silicon barium calcium inovulant is molten iron gross mass
0.3%；
Then an inoculation is carried out：Long-acting silicon barium calcium zircaloy inovulant is added into the molten iron after spheroidising,
An inoculation is carried out, to eliminate the chilling tendency caused by tension-active element, graphite nodule is refined, delays decaying spheroidisation；
In step 2), the long-acting silicon barium calcium zircaloy inovulant includes the component of following percetage by weight：Si：40%,
Ba：0.5%, Ca：1.0%, Zr：0.5%, remaining is iron and inevitable impurity；Long-acting silicon barium calcium zircaloy inovulant
Addition be molten iron gross mass 0.6%；
Then the molten iron open-top receptacle 9 obtained after an inoculation is contained；
3) open-top receptacle 9 in step 2) is placed in a second closed chest 8, and causes the upper stalk
6 lower end is immersed in the molten iron in the open-top receptacle 9 through the top case lid of second chest 8, seals the upper stalk 6
With the junction of second chest 8；
4) compressed gas are blowed into second chest 8, while opens vavuum pump extraction vacuum, in open-top receptacle 9
Molten iron is up along upper stalk 6 in the presence of the pressure of compressed gas and the suction force of vacuum, and molten iron is successively running channel mould
Sample 2 gasifies with casting form 1, and running channel apperance 2 is with the gas after the gasification of casting form 1 by vaccum suction tube 7 by vacuum pumping
Walk, molten iron fills type from the bottom up, until the liquid level in open-top receptacle 9, which no longer declines, shows that molten iron fills whole casting mold die cavity, so
Keep blowing gas afterwards and vacuumize certain time；
5) after design time is reached, stopping blows compressed gas and vacuumized；
The upper stalk 6 is extracted out from second chest 8 after Shake-out Time is reached, then taken apart described spacious
Mouth case 4, then abolishes casting mold, obtains ductile cast iron casting.
Chemical examination is sampled to ductile cast iron casting, the results are shown in Table 1；
The detection standard sample of the ductile cast iron material is prepared as stated above, detects the mechanical property of the ductile cast iron material
Can, it the results are shown in Table 2.
Chemical composition/wt% of the low-temperature-resistance high-toughness ductile cast iron casting of table 1
Chemical composition (continued)/wt% of the low-temperature-resistance high-toughness ductile cast iron casting of table 1
| Element | Ba | Bi | Zr | Fe |
| Embodiment 1 | 0.00735 | 0.0015 | 0.004 | Surplus |
| Embodiment 2 | 0.0050 | 0.0008 | 0.003 | Surplus |
The performance detection data table (single casting sample) of spheroidal graphite cast-iron prepared by the embodiment of table 2
The explanation of above example is only intended to help the method and its core concept for understanding the present invention.It should be pointed out that pair
For those skilled in the art, under the premise without departing from the principles of the invention, the present invention can also be carried out
Some improvement and modification, these are improved and modification is also fallen into the protection domain of the claims in the present invention.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications for these embodiments are it will be apparent that defined herein one for those skilled in the art
As principle can realize in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will
It will not be intended to be limited to the embodiments shown herein, and be to fit to consistent with principles disclosed herein and features of novelty
Widest range.
Claims (5)
1. a kind of spheroidal graphite cast-iron of low-temperature-resistance high-toughness, it is characterised in that include the component of following percetage by weight：3.8%~
4.0% C, 1.5%~2.5% Si, 0.015%~0.025% Ti, 0.002%~0.004% Mo, 0.002%~
0.004% V, S ＜ 0.015%, P ＜ 0.03%, 0.03%~0.05% Mg, 0.02%~0.03% Re,
0.0015%~0.0100% Ca, 0.0015%~0.0100% Ba, 0.0008%~0.0020% Bi, 0.0025%
~0.0045% Zr, surplus are Fe and inevitable impurity.
2. the preparation method of the spheroidal graphite cast-iron of the low-temperature-resistance high-toughness described in a kind of claim 1, it is characterised in that including following
Step：
1) casting form of target casting is produced using foamed plastics according to lost-foam casting method：Producing the mistake of casting form
Powdered post inoculant is mixed in journey so that in the casting form of the foamed plastics material of the solid-state obtained after foaming
Contain equally distributed post inoculant powder；
The running channel apperance of running channel is produced using foamed plastics；
Then the running channel apperance is bonded on the bottom surface of the casting form, and controls the running channel apperance and the casting
The axial direction of apperance is parallel to each other, and obtains the apperance integral piece for including the casting form and running channel apperance；
Then then dried in the outer surface coating refractory coating of apperance integral piece using dip coating manner；
Open top container is taken, apperance integral piece is positioned in a manner of vertical in the upper open top container；
Then upper stalk is set, the upper stalk is passed through and is fixed in the lower bottom of the upper open top container, the running channel
The lower end of apperance contacts with the upper end open of the upper stalk, and the lower surface of the running channel apperance be completely covered by it is described
The upper end open of upper stalk, seal the upper stalk and the junction of bottom under the upper open top container；
Then vaccum suction tube is set, the vaccum suction tube is passed through and is fixed on the side box wall of the upper open top container, described
Vaccum suction tube it is inner spaced apart with the apperance integral piece, the outer end of the vaccum suction tube is exposed at described spacious
The outside of mouthful case and connected with vavuum pump, seal the junction of the vaccum suction tube and the upper open top container side box wall；
Then drystone sand is filled out into the upper open top container according to lost-foam casting method, then vibration molding；
Then plastic covering film is sealed on the upper surface of the casting mold according to lost-foam casting method in upper open top container；
2) smelt：Smelting molten iron, when molten iron temperature reaches 1490 DEG C~1530 DEG C, stokehold adjustment hot metal composition causes ladle
Include the component of following percetage by weight：3.8%~4.0% C, 1.5%~2.5% Si, 0.015%~0.025% Ti,
0.002%~0.004% Mo, 0.002%~0.004% V, S ＜ 0.015%, P ＜ 0.03%, surplus is for Fe and not
Evitable impurity；
After hot metal composition is qualified, skim；
Then, 3min~5min is incubated, molten iron is ready for and comes out of the stove；
Then spheroidising is carried out：Light rare earth magnesium nodulizer is placed in casting ladle bottom, long-acting silicon barium calcium is covered thereon and breeds
Agent, method spheroidizing process is poured using lid bag dam-type molten iron spheroidising is carried out to molten iron；
Then an inoculation is carried out：Long-acting silicon barium calcium zircaloy inovulant is added into the molten iron after spheroidising, is carried out
Inoculation；
Then the molten iron obtained after an inoculation is contained with open-top receptacle；
3) open-top receptacle in step 2) is placed in a second closed chest, and causes the lower end of the upper stalk
Top case lid through second chest is immersed in the molten iron in the open-top receptacle, seals the upper stalk and described second
The junction of chest；
4) compressed gas are blowed into second chest by air inlet pipe, while opens vavuum pump and extract vacuum, open-top receptacle
Interior molten iron is up along upper stalk in the presence of the pressure of compressed gas and the suction force of vacuum, and molten iron is successively running channel
Apperance gasifies with casting form, and the gas after running channel apperance gasifies with casting form is taken away by vaccum suction tube by vavuum pump,
Molten iron fills type from the bottom up, until the liquid level in open-top receptacle, which no longer declines, shows that molten iron fills whole casting mold die cavity, Ran Houbao
Hold and blow gas and vacuumize certain time；
5) after design time is reached, stopping blows compressed gas and vacuumized；
The upper stalk is extracted out from second chest after Shake-out Time is reached, then takes the upper open top container apart,
Then casting mold is abolished, obtains ductile cast iron casting.
3. preparation method according to claim 2, it is characterised in that in step 2), the light rare earth magnesium nodulizer
Include the component of following percetage by weight：Mg：3%~4%, Re：2%~2.5%, Si：25%~35%, surplus be iron and
Inevitable impurity；The addition of light rare earth magnesium nodulizer is the 1.0%~1.2% of molten iron gross mass, spheroidising
Temperature is 1490 DEG C~1520 DEG C；
And in step 2), long-acting silicon barium calcium inovulant includes the component of following percetage by weight：Si：40%~50%, Ba：
0.5%~0.7%, Ca：0.6%~1.0%, remaining is iron and inevitable impurity；Long-acting silicon barium calcium inovulant adds
Enter 0.3%~0.4% that amount is molten iron gross mass.
4. preparation method according to claim 2, it is characterised in that in step 2), the long-acting silicon barium calcium zircaloy is pregnant
Educating agent includes the component of following percetage by weight：Si：40%~50%, Ba：0.5%~0.7%, Ca：0.6%~1.0%,
Zr：0.5%~0.8%, remaining is iron and inevitable impurity；The addition of long-acting silicon barium calcium zircaloy inovulant is iron
The 0.5%~0.6% of water gross mass.
5. preparation method according to claim 2, it is characterised in that in step 1), post inoculant includes following weight
The component of percentage：Si：40%~50%, Ba：0.5%~0.7%, Ca：0.6%~1.0%, Bi：0.8%~1.0%,
Re：0.1%~0.3%, remaining is iron and inevitable impurity；The addition of post inoculant is molten iron gross mass
0.1%~0.15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711052442.0A CN107699787B (en) | 2017-10-30 | 2017-10-30 | A kind of spheroidal graphite cast-iron of low-temperature-resistance high-toughness and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711052442.0A CN107699787B (en) | 2017-10-30 | 2017-10-30 | A kind of spheroidal graphite cast-iron of low-temperature-resistance high-toughness and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107699787A true CN107699787A (en) | 2018-02-16 |
| CN107699787B CN107699787B (en) | 2019-02-01 |
Family
ID=61177181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711052442.0A Active CN107699787B (en) | 2017-10-30 | 2017-10-30 | A kind of spheroidal graphite cast-iron of low-temperature-resistance high-toughness and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107699787B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110465642A (en) * | 2019-09-13 | 2019-11-19 | 济南得德环保科技有限公司 | A kind of casting method of the cast iron cylinder cover for automobile engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103789605A (en) * | 2014-02-19 | 2014-05-14 | 恒天重工股份有限公司 | Manufacturing method of spheroidal graphite cast iron casting of wind power yaw variable-pitch device |
| CN105256220A (en) * | 2015-09-22 | 2016-01-20 | 山东汇丰铸造科技股份有限公司 | Low-temperature high-toughness nodular cast iron winding drum and preparation method thereof |
| US20160053351A1 (en) * | 2013-05-14 | 2016-02-25 | Toshiba Kikai Kabushiki Kaisha | High-stength, high-damping-capacity cast iron |
| CN105506440A (en) * | 2015-12-15 | 2016-04-20 | 山东汇丰铸造科技股份有限公司 | Nodular cast iron winding drum high in strength and ductility and preparation method thereof |
| CN105779856A (en) * | 2016-03-04 | 2016-07-20 | 沈阳工业大学 | Nodular cast iron subsoiling shovel tip of agricultural machine and production technique of nodular cast iron subsoiling shovel tip |
-
2017
- 2017-10-30 CN CN201711052442.0A patent/CN107699787B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160053351A1 (en) * | 2013-05-14 | 2016-02-25 | Toshiba Kikai Kabushiki Kaisha | High-stength, high-damping-capacity cast iron |
| CN103789605A (en) * | 2014-02-19 | 2014-05-14 | 恒天重工股份有限公司 | Manufacturing method of spheroidal graphite cast iron casting of wind power yaw variable-pitch device |
| CN105256220A (en) * | 2015-09-22 | 2016-01-20 | 山东汇丰铸造科技股份有限公司 | Low-temperature high-toughness nodular cast iron winding drum and preparation method thereof |
| CN105506440A (en) * | 2015-12-15 | 2016-04-20 | 山东汇丰铸造科技股份有限公司 | Nodular cast iron winding drum high in strength and ductility and preparation method thereof |
| CN105779856A (en) * | 2016-03-04 | 2016-07-20 | 沈阳工业大学 | Nodular cast iron subsoiling shovel tip of agricultural machine and production technique of nodular cast iron subsoiling shovel tip |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110465642A (en) * | 2019-09-13 | 2019-11-19 | 济南得德环保科技有限公司 | A kind of casting method of the cast iron cylinder cover for automobile engine |
| CN110465642B (en) * | 2019-09-13 | 2020-12-18 | 日照市听雨轩文化传媒有限公司 | Casting method of cast iron cylinder sleeve for automobile engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107699787B (en) | 2019-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Stefanescu | A history of cast iron | |
| CN104988381B (en) | Large-section cast ferrite nodular cast iron and preparation method thereof | |
| CN107904484A (en) | A kind of situ Particles enhancing spheroidal graphite cast-iron reel and preparation method thereof | |
| CN103014219B (en) | Control method of as-cast condition heavy section ferrite-based nodular iron casting graphite nodule and matrix structure | |
| CN103898396A (en) | Preparation method of megawatt wind power high-strength high-toughness low-temperature (-30 DEG C) spheroidal graphite iron casting | |
| CN108284202A (en) | A kind of casting method improving ductile cast iron material tissue and performance and the casting by its casting | |
| CN107699787B (en) | A kind of spheroidal graphite cast-iron of low-temperature-resistance high-toughness and preparation method thereof | |
| CN101805868A (en) | Method for smelting thin-wall ductile iron gearbox | |
| CN107974610A (en) | A kind of Al2O3Particle enhancing spheroidal graphite cast-iron and preparation method thereof | |
| CN102373364B (en) | Wind power equipment casting and preparation method thereof | |
| CN107974609A (en) | A kind of situ Particles enhancing spheroidal graphite cast-iron and preparation method thereof | |
| CN107557659B (en) | A kind of spheroidal graphite cast-iron reel of low-temperature-resistance high-toughness and preparation method thereof | |
| CN102078956A (en) | Method for casting mechanical arm casting of robot | |
| CN110042281A (en) | A kind of cast aluminium alloy gold and preparation method thereof | |
| CN107604241B (en) | - 50 DEG C of iron casting and its casting method for bullet train electric machine stand | |
| CN105821287B (en) | A kind of high performance spheroidal graphite cast-iron and preparation method thereof | |
| CN106424571B (en) | The cavity structure of the middle case of wind power generating set, the method for preparing middle case using the structure | |
| ES2163894T3 (en) | FOUNDRY PARTS WITH SPHEROIDAL OR COMPACTED GRAPHITE PRODUCED BY DETERMINATION OF COEFFICIENTS FROM COOLING CURVES AND BY ADJUSTMENT OF THE CONTENTS OF STRUCTURE MODIFICATION AGENTS IN THE FUSED MASS. | |
| CN107354274B (en) | A kind of short route austempering ductile iron subsoiling shovel tip preparation method | |
| CN207577399U (en) | A kind of casting system of the spheroidal graphite cast-iron reel of low-temperature-resistance high-toughness | |
| CN107904483A (en) | A kind of Al2O3Particle enhancing spheroidal graphite cast-iron reel and preparation method thereof | |
| Sonne et al. | Comparison of residual stresses in sand-and chill casting of ductile cast iron wind turbine main shafts | |
| CN106011603A (en) | Smelting technology of high-strength vermicular graphite cast iron | |
| CN106636870B (en) | A kind of pure magnesium spheroidizing process of evaporative pattern spheroidal graphite cast-iron | |
| CN207577359U (en) | A kind of casting system of situ Particles enhancing spheroidal graphite cast-iron reel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20181210 Address after: 250204 Xishou, Beiyuan Road, Diaoxi Village, Zhangqiu District, Jinan City, Shandong Province Applicant after: Shandong Jinhui Foundry Machinery Co., Ltd. Address before: 250204 No. 136 Diaozhen Central Street, Zhangqiu City, Jinan City, Shandong Province Applicant before: Shandong Huifeng Casting Co., Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |